Wirtgen offers three wheeled recyclers: the WR 200i, WR 200 XLi, WR 240i and WR 250 models. Equipped with a powerful milling and mixing rotor as well as cutting-edge injection systems, they mill and granulate asphalt pavements, inject binding agents and water in precisely metered quantities and mix it all in a single in-place operation.
The Resource Efficiency System combines an automatic steering system and digital project site documentation in a single app that makes a significant contribution to the cost-effectiveness and resource-efficiency of soil stabilization and recycling operations. The satellite-based steering system enables precise and efficient completion of the successive project tasks. It steers the machine with a precision measured in centimeters on the basis of a previously calculated reference cut and a specified overlap of adjacent cuts. At the same time, all relevant location-specific parameters are registered to provide a comprehensive database for site analysis and documentation. In the case of soil stabilizers, these are, for instance, working width and depth, distance and area worked, fuel consumption, and numerous other parameters. The forward-looking system is also scalable, which means that other machines such as motor graders, rollers and compactors involved in the process can also benefit from the data.
In order to achieve consistently high quality of the mixing results, the addition of water and binding agents is regulated depending on a range of parameters such as the working width and depth, the material density, and the machine advance rate. Each injection bar has a maximum of 16 nozzles, each of which can be activated or deactivated at any time to vary the spraying width. With the VARIO injection bar for water, bitumen emulsion, and foamed bitumen, another innovation now makes its debut in the WR series. The adjustable nozzle cross-section enables the regulation of the injection pressure and, in turn, the depth the spray jet penetrates into the milled granulate. The result is an even more even distribution of water, bitumen emulsion, or foamed bitumen throughout the entire mixing chamber.
